Gold level here, too. I haven't used the clean and check service yet, but I agree with Dave, the kit they send is nice. I converted my CPS strap to a sling style. It works well.
My only beef with them is they send the kit Fedex with a "must have" signature delivery. The Fedex driver can't take a signed door tag. You have to be there to sign. When I renewed my membership, I couldn't be here to sign for the kit because I had just started my new job. The Fedex facility is 31 miles away, so I couldn't go pick it up either. They were supposed to resend it with lesser signature requirements, but they never did. I'll need to chase them down on that now.
"I know rocks. Rocks are hard."